I can see SF locking him up for the 4th year with a contract for that year after this year like the Packers did with love. Hit him with 10-15MM and I think it would be good for both. That’s life security money, then push for the BIG money in year 5.
Packers did in lieu of a 5th year option for Love. Declined his $20m option and gave him a $15m offer to replace.
With certainty the 49ers will not be paying Purdy 10-15m for his 4th year. He's under contract with a high salary cap team.